Valve lock



Fm. 26, 1929. w 1,703,7o1

A. ZELNIO ET AL VALVE LOCK Filed Feb. 13,v 1928 Patented' F eb. 26; 1929.

UNITED sTAgTs g f o 1,7o3,701 PATNT* OFFICE.

Anons' zELNIo; sz'YimoN znLNro, vaim zYGmUNr zELNio, or MOL'INE', ILLINoIs.

` vALvi': Loox.

Application filed February 13, 1928. Serial No. 254,137. i

The present invention relates to valve looks, and has particular application in i va-lves in gas ranges and'stoves, the principal object thereof beingthe provision of a device in association withthe valve plugto hold the samelocked when. in closed-position to' prevent inadvertent opening of the same. 5 v

VVith the above general'object inV view and others that will appear' as the nature of the :inventionis better understood, the same consists in the novel construction, combination and arrangement of parts hereinafter more fully described, illustrated in the acl companying drawing and pointed out infthe appended claim. V

In .the drawing forming .part of this application, and in which like designating characters refer to corresponding parts 20 throughout the several views,

Fig. 1 is a sideview, partly vin section and vpartly in elevation, .showing theloperation of the device when the valve is closed;

Fig. 2' is a cross-sectional view on a horizontal plane., on line 2 2 of Fig. 1;

Fig. 3 is a side elevational view of the valve plug and the handle;

Fig. 4 is a top plan view of the valve; and

Fig. 5 is a side elevational View of locking` means operable with the valve plug.

Referring to the drawing in detail there is shown therein valve casing 10 havingV a.

horizontal cvlindrical projection 11 which ceiving pipe 13 which supplies the gas tov to a burnei' in a range 01' gas stove. Said pi'ojection 11 is likewise provided with bore 14 through which gasis supplied to pipe 13. Valve plug 15 is fitted within valve casing 10 and remains in the path of bore 14. Said plug is provided at its lower end with bore 16 which is adapted to register with bores 11 and 14 for supplying the gas. Plug 15 is operable by means of handle 17 which is integrally formed with the plug. At its lower end said plug 15 is provided with a reduced threaded lug 18 which is adapted to receive nut 19. Interposed between the lower end of valve casing 1.0 and said nut 19 is a compressed coil spring 20 by means of which plug 15 is held in position within said casing 1b.

is adapted for attachlnent to a manifold..

Valve plug 15 is further provided with a square bore 21 which is centrally and axially located in said valve plug and which term'inates above the transverse'bore 16. Said b'ore 21 is adapted'to vreceive a square lug 22 within-which bore said lug 22' is adapted for upright sliding movement, said lug 22 being slightly shorter than thef length of bore 21. At its upper' end said lug 22 is provided. with anfintegrally 'formed head 23.

Positioned within. said bore 21and`contacting with the lower'end of said lug 22 is coilrspi'ing 24 which atpall times tends to press said lug 22 upwardly; In alinement'with the transverse bore 16t-he valve plug 15 is further providedV with an oblong slot 25 which is located substantially ata central point between said transverse bore 16 and theupper end of Valve plug 15, for the purpose hereinafter described.

Adjacent the upper end of valve casing 10 bayonet slot 26 is made in said casing,;with

its longer portion horizontally disposed and its shorter portion vertically positioned.

In assemblingjvarious parts in'their co- Operating arrangement, upon mounting the valve plug within casing 10 and holding the same in position by nut 19 and spring 20, lug 22 is inserted within bore 21 of the valve plug 15. Thereupon manual pressure is applied to head 23 until bore 27 made in lug 22 is in alinenient with the horizontal portionof bayonet slot 26. Thereupon pin 28 by its reduced end is. driven into bore 27. Thus said pin 28 will at all times remain within the bayonet 'slot 26'and will cooperate therewith for either facilitatingl or preventing the rotation of the valve plug 15 when under actuation by handle 17.

i F ig; 1 illustrates the position of the various parts when valve is closed With pin 28 remaining at the upper end of the shorter Vertical portion of the bayonet lslot 26, with bore 14 blocked by the solid portion of the valve plug 15. In this position of the valve plug handle 17 will remain in substantially parallel relation with projection 11 and pipe 13,and will be held againstrotation due to the engagement of pin 28 with casing 10 by virtue of its being in theV said shorter vertical portion of bayonet slot 26. To open the valve for the purpose Vof bringing bore vfiow of gas therethrough, manual pressure is applied Vto head 23 for bringing pin l28 out of engagement with' the valve casing and into 'the horizontal-portion of bayonet slot 26. Itisv observed that the oblong slot 25 registering-With the shorter Vertical portion of vb'ayonet slot 26 perinits free movenient of v'pin 28 Within said oblong slot 25 as Well as With the shorter Vertical portion of bayonet f slot 26. By pressing at head 23 pin 28 Will be brought in path of the horizontal port-ion of the bayonet slot'26 and lthen handle 17 may be angularly moved for rotating valve plug for opening the valve 01' for bringing bore 16 in alinement With'bore 14 and pipe 13 for permitting the flow of gas.

It is observed that 'the horizontal portion of bayonet slot 26 is long enough topermit at least one-fourth of revolution of valve plug 15, as is indicated on Fig. 4 by two i positions of handle 17 'the position of handle 17 (when the valve isclosed beingindieated by full lines, and the position when valve is opened being shown by dotted lines.

As'long as pin 28 reinains Within the horizontal port-ion of bayonet slot 26 valve plug 15 may be freely rotated as far as the ends of the horizontal portion of bayonet slot 26) Will permit, and as long as pin 28 remains i within the horizontal portion of bayonet slot 26 no pressure at lug 22 to rotate plug 15 is required. When closing the valve handle 17 is rotated together With valve plug 15 until pin 28 is brought in alinement With thel shorter Vertical portion of bayonet slot 26, When due to pressure of spring 24 i exerted at the lower end of lug 22, said pin 28' Will automatically ``.spring into said sho'i'ter Vertical VportionV of bayonet slot 26 which Will be held therewithin for preventsing rotation of the Valve plug 15.

VVhile there is desoribed hei'ein a preferred embodiment of the present invention, it is nevertheless to be understood that ininor changes may be'made therein without departing from the spirit and scope of the invention as elaiined.

VhatWe claim asnew is: In a device of the type descrlbed a Valve casing and a valve plug therewithin forined with a 'bore'having polygonal cross-sectional I said pin extending toandoperating Within said'bayonet slot, andftensioning means ,in said bore for driving said lug upwardly to expose a portion-ofthe same Without the plug and for bringing about an automat-ie17V engagement of said pin With said Vertical portion of said bayonet slot when the valve remains closed for the purpose of maintaining the Valve plug against rotat-ion.V

In testimony Whereof We afiix oui` signatures.l i

ADOLF ZELNIOJ SZYMON ZELNIO.

i ZYGMUNT Z'ELNIO. 

